WO2004015445A1 - Dispositif d'emission et de reception de rayonnement electromagnetique - Google Patents

Dispositif d'emission et de reception de rayonnement electromagnetique Download PDF

Info

Publication number
WO2004015445A1
WO2004015445A1 PCT/DE2003/002569 DE0302569W WO2004015445A1 WO 2004015445 A1 WO2004015445 A1 WO 2004015445A1 DE 0302569 W DE0302569 W DE 0302569W WO 2004015445 A1 WO2004015445 A1 WO 2004015445A1
Authority
WO
WIPO (PCT)
Prior art keywords
diode
frequency band
frequency
antenna
oscillator
Prior art date
Application number
PCT/DE2003/002569
Other languages
German (de)
English (en)
Inventor
Klaus-Dieter Miosga
Armin Himmelstoss
Guenter Bertsch
Joachim Hauk
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2004015445A1 publication Critical patent/WO2004015445A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • G01S7/032—Constructional details for solid-state radar subsystems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • G01S7/034—Duplexers
    • G01S7/036—Duplexers involving a transfer mixer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/35—Details of non-pulse systems

Definitions

  • the present invention relates to a device for transmitting and receiving electromagnetic radiation, in particular microwave radiation, which consists of at least one oscillator, one diode, one antenna and two radio-frequency band-locks, the diode being arranged between the oscillator and the antenna.
  • an adaptive distance and speed controller which uses a radar sensor to detect the relative position and the relative speed of objects that are in front of the vehicle equipped with them and, depending on the determined object data, the drive devices of the vehicle or the deceleration devices of the
  • a radar transmission and reception device which is preferably used in automobiles. Furthermore, it is described that a frequency-modulated oscillator signal is fed via a ring coupler to both a monostatic antenna and a second ring coupler, and that the received antenna signal is also passed on to the second ring coupler via the first ring coupler. With the help of the second ring coupler, the transmit and Received signal mixed and demodulated by means of second diodes, so that an intermediate frequency signal can be tapped at the intermediate frequency outputs for further processing.
  • the essence of the present invention is to provide a device for transmitting and receiving electromagnetic radiation which can be produced with as few components as possible and which requires as little space as possible. According to the invention, this is solved by the features of the independent claim.
  • the diode is arranged in series between the oscillator and the antenna. This means that both the send and the
  • Receive signals are present at the diode, which acts as a demodulator.
  • the diode can be driven by the direct current Ibias or the received power in such a way that the diode essentially only has an unavoidable damping behavior in the transmission direction.
  • the two high-frequency band-locks are each arranged in parallel, the first high-frequency band-stop being connected between the diode and the oscillator and the second high-frequency band-stop being connected between the diode and the antenna.
  • the oscillator modulates a frequency-modulated continuous wave signal.
  • This frequency-modulated continuous wave signal which is also known as an FMCW signal, enables simple and precise determination of the object distance or the object relative speed by measuring the signal transit time or the Doppler effect.
  • the antenna is designed as a patch antenna.
  • the provision of a patch antenna enables inexpensive and precise manufacture of the
  • Antenna and, depending on the positioning of the patch antenna, a polarization of the transmit and receive signals.
  • the first and the second high-frequency band-stop advantageously have their maximum blocking effect in the frequency range around 77 gigahertz.
  • the diode is supplied with a direct current via the two high-frequency band-locks.
  • the diode is biased by means of a DC voltage into an operating point in which an advantageous demodulation of the transmit and receive signals can be achieved.
  • High-frequency band-lock can be tapped off, a frequency in the range around 100 kilohertz.
  • the arrangement for transmitting and receiving electromagnetic radiation is advantageously used in a motor vehicle radar system, which generates control signals for the drive devices and the brake devices of the vehicle from the relative object positions and the relative object speeds in relation to the driver's own vehicle.
  • a motor vehicle radar system which generates control signals for the drive devices and the brake devices of the vehicle from the relative object positions and the relative object speeds in relation to the driver's own vehicle.
  • FIG. 1 shows the design of the device according to the invention using stripline technology and the sonication of the device with further system components.
  • the oscillator 1 which generates a transmission signal.
  • This transmission signal is preferably a frequency-modulated continuous wave signal, also known under the term “frequency modulated continuous wave” signal, in which the transmission frequency is increased and decreased linearly around a carrier frequency according to a ramp function.
  • This transmission signal is transmitted via a first matching circuit 6 of the device according to the invention supplied, the first matching circuit 6 has the task of the transmission signal to the
  • the transmission signal passes the diode 2 and reaches the antenna 3 via a second matching circuit 7, which can preferably be designed as a monostatic antenna.
  • the antenna 3 is designed as a patch antenna, although other antenna embodiments can also be selected.
  • Antenna 3 emits the transmission signal, which can be emitted as a polarized signal if the antenna patch is suitably positioned.
  • the electrical power emitted in this way is partially reflected on objects possibly present in the detection range of the transmitting and receiving device and partially received by the monostatic antenna 3, which also acts as a receiving antenna.
  • the received signals obtained in this way are fed back from the antenna 3 via the second matching circuit 7 to the diode 2, among other things. Transmit and receive signals are now superimposed on the diode 2, so that the mixture products are demodulated at the non-linearity of the diode 2.
  • there is no diode bias Necessary, since the large transmission and reception powers lead to a so-called self-biasing, that is to say that the diode 2 is driven by the transmission and reception signals to such an extent that a bias of the diode 2 can be dispensed with. Since the transmission and reception performance in motor vehicle radar systems is generally very small, a bias bias is necessary in most cases.
  • High-frequency band-stop device 4 which is in contact with the device in the area of the first matching circuit 6 and is connected to the ground on the one hand, and through the second high-frequency band-stop device 5, which is in contact with the transmitter and receiver device between the antenna 3 and the diode 2, and on the other hand, connected to a current source Ibias, the diode 2 can be connected to a corresponding one
  • the first and second high-frequency band-blocking devices 4, 5 ensure that the high-frequency transmit and receive signals are neither short-circuited via the ground nor can they influence other components via the Ibias current source or the intermediate frequency output ZF OUT .
  • the product of the mixing and demodulation at the diode 2 has a frequency which is approximately in the range from 1 to several 100 kilohertz. This frequency is dependent on the frequency deviation ⁇ f of the frequency-modulated FMCW ramp and on the transit time ⁇ , which the transmission signal requires until it has been reflected on a corresponding object and is in turn applied to the diode 2. The meantime frequency change of the FMCW ramp as well as a possibly existing one
  • Doppler effect due to a moving object determine the frequency of the demodulated intermediate frequency signal.
  • This demodulated signal can pass through the second high-frequency bandstop 5 unimpaired and be tapped via a coupling capacitor C at the terminal ZF 0 u ⁇ at which the intermediate frequency output signal is present.
  • the coupling capacitor C has the function of providing a DC voltage-free intermediate frequency output signal by the capacitor C blocking the DC current I BIAS , which biases the diode 2 to a suitable operating point.
  • the direct current I BIAS5 which flows via the second high-frequency band-stop 5, the diode 2, the first matching circuit 6 and the first high-frequency band-blocking device 4 can be set, for example, in such a way that the transmission losses caused by the first matching circuit 6 and the second matching circuit 7 are the loss at the diode when sending and the mixer loss when receiving, is minimal.
  • the optimization of the intermediate frequency power for a specific object distance can therefore be set by means of the current I BIAS .
  • the device according to the invention can also be embodied as a multi-beam radar system in that the device according to the invention is executed several times side by side.
  • the ground connection to the operating point bias is made via the second high-frequency band stop 5 and the current source Ibias and the coupling capacitor C with the intermediate frequency output ZF OUT must be connected to the first high-frequency band stop 4.
  • the polarity of the diode 2 must be reversed in comparison to the exemplary embodiment shown in FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

Dispositif d'émission et de réception de rayonnement électromagnétique, en particulier de micro-ondes, qui est constitué au moins d'un oscillateur, d'une diode, d'une antenne et de deux filtres à suppression de bande haute fréquence, la diode étant placée entre l'oscillateur et l'antenne.
PCT/DE2003/002569 2002-08-02 2003-07-31 Dispositif d'emission et de reception de rayonnement electromagnetique WO2004015445A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10235338.7 2002-08-02
DE2002135338 DE10235338A1 (de) 2002-08-02 2002-08-02 Vorrichtung zum Senden und Empfangen elektromagnetischer Strahlung

Publications (1)

Publication Number Publication Date
WO2004015445A1 true WO2004015445A1 (fr) 2004-02-19

Family

ID=30128653

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2003/002569 WO2004015445A1 (fr) 2002-08-02 2003-07-31 Dispositif d'emission et de reception de rayonnement electromagnetique

Country Status (2)

Country Link
DE (1) DE10235338A1 (fr)
WO (1) WO2004015445A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1610148A1 (fr) * 2004-06-25 2005-12-28 Robert Bosch Gmbh Détecteur radar

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004044130A1 (de) 2004-09-13 2006-03-30 Robert Bosch Gmbh Monostatischer planarer Mehrstrahlradarsensor
DE102005062128A1 (de) * 2005-12-23 2007-08-30 Robert Bosch Gmbh Radarvorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4319244A (en) * 1979-01-22 1982-03-09 Nissan Motor Co., Ltd. Short-range doppler radar
EP0685930A1 (fr) * 1994-06-01 1995-12-06 Plessey Semiconductors Limited Emetteur-récepteur radar
US5497163A (en) * 1993-08-09 1996-03-05 Siemens Aktiengesellschaft Doppler radar module using micro-stripline technology
US5596325A (en) * 1995-07-07 1997-01-21 Nonlinear Technologies, Inc. FM-CW radar transceiver

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4319244A (en) * 1979-01-22 1982-03-09 Nissan Motor Co., Ltd. Short-range doppler radar
US5497163A (en) * 1993-08-09 1996-03-05 Siemens Aktiengesellschaft Doppler radar module using micro-stripline technology
EP0685930A1 (fr) * 1994-06-01 1995-12-06 Plessey Semiconductors Limited Emetteur-récepteur radar
US5596325A (en) * 1995-07-07 1997-01-21 Nonlinear Technologies, Inc. FM-CW radar transceiver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1610148A1 (fr) * 2004-06-25 2005-12-28 Robert Bosch Gmbh Détecteur radar
US7202811B2 (en) 2004-06-25 2007-04-10 Robert Bosch Gmbh Radar sensor

Also Published As

Publication number Publication date
DE10235338A1 (de) 2004-02-12

Similar Documents

Publication Publication Date Title
DE69733511T2 (de) Radaranlage mit vereinfachter Bauart
EP1601991B1 (fr) Procede et dispositif de re gulation adaptative de puissance
EP0758093B1 (fr) Radar à puissance d'émission réduite
DE69529118T2 (de) Radar-Sender/Empfänger
EP0359911A2 (fr) Altimètre de radar
DE2542628C2 (de) Korrelationsradar zur Entfernungsmessung
WO2003107528A2 (fr) Circuit servant a generer des signaux iq
DE102004044130A1 (de) Monostatischer planarer Mehrstrahlradarsensor
EP1340097A1 (fr) Dispositif radar et son procede de fonctionnement
DE102010002759A1 (de) Radarsensor mit Selbsttesteinrichtung
DE69122375T2 (de) Sender-Empfängerteil eines Pulsdopplerradars
EP2414862A1 (fr) Dispositif de détection radar multifaisceaux et procédé de détermination d'une distance
EP1610148B1 (fr) Détecteur radar
DE102004051276A1 (de) Radarsensor zur Ermittlung des Abstands und der Relativgeschwindigkeit von Objekten
EP1423729A2 (fr) Ensemble radar pulse
EP1600793A2 (fr) Capteur radar pour véhicules motorisés
EP1423723A2 (fr) Ensemble radar pulse
WO2020225314A1 (fr) Système de radar multistatique cohérent, en particulier pour une utilisation dans un véhicule
EP1245964A1 (fr) Procédé de génération et d'évaluation des impulsions de radar et un détecteur radar
EP2438459B1 (fr) Capteur radar avec compensation du signal perturbateur
WO2004015445A1 (fr) Dispositif d'emission et de reception de rayonnement electromagnetique
DE69114591T2 (de) Gepulstes Radar mit einem einzigen FSK-Oszillator.
DE69721452T2 (de) Kombinierter Duplexer-Mischer
WO2003027708A1 (fr) Radar a ondes continues permettant de determiner la distance d'un objet sur la base du temps de propagation d'un saut de phase applique au signal d'ondes continues
DE69009573T2 (de) Einrichtung zur Detektion der Durchfahrt von mindestens einem beweglichen Gegenstand an mindestens einem bestimmten Punkt seiner Bewegung.

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP